EXHIBIT 21

SUBSIDIARIES OF ACXIOM

U.S. SUBSIDIARIES

Name Incorporated In Doing Business As

1. Acxiom CDC, Inc. Arkansas Acxiom CDC, Inc.

2. Acxiom CH, Inc. Delaware Acxiom CH, Inc.

3. Acxiom Canada, Inc. Arkansas Acxiom Canada, Inc.

4. Acxiom Digital, Inc. Delaware Acxiom Digital, Inc.

5. Acxiom / Direct Media, Inc. Arkansas Acxiom / Direct Media, Inc.

6. Acxiom e-Products, Inc. Arkansas Acxiom e-Products, Inc.

7. Acxiom Equitec Holdings, Inc. Delaware Acxiom Equitec Holdings, Inc.

8. Acxiom Information Security Arkansas Acxiom Information Security Services, Inc.

Services, Inc.

9. Acxiom Interim Holdings, Inc. Arkansas Acxiom Interim Holdings, Inc.

10. Acxiom / May & Speh, Inc. Delaware Acxiom / May & Speh, Inc.

11. Acxiom RM-Tools, Inc. Arkansas Acxiom RM-Tools, Inc.

12. Acxiom Risk Mitigation, Inc. Colorado Acxiom Risk Mitigation, Inc.

13. Acxiom Transportation Services, Inc. Arkansas ATS; Conway Aviation, Inc.

14. Acxiom UWS, Ltd. Arkansas Acxiom UWS, Ltd.

15. Smartreminders.com, Inc. Tennessee Smartreminders.com, Inc.

INTERNATIONAL SUBSIDIARIES

Name Incorporated In Doing Business As

16. Acxiom Australia Pty Ltd Australia Acxiom Australia Pty Ltd

17. Acxiom European Holdings Ltd. United Kingdom Acxiom European Holdings Ltd.